CN103619393A - Interface comprising a rolling nasal bridge portion - Google Patents

Abstract

An interface for positive pressure therapy includes a mask assembly, a headgear assembly and a connection port assembly. The mask assembly comprises a seal member that has an upper portion movably connected to an integrated lower portion, wherein the upper portion rolls during hinging movement of the upper portion relative to the lower portion. The headgear assembly allows connection to the mask assembly in a direction substantially normal to a direction of strap tension. The connection port assembly includes a swivel elbow with a valve member that controls flow through a port that opens toward the user.

Description

The interface that comprises wrap-up bridge of the nose part

The cross reference of related application

The application requires the U.S. Provisional Patent Application submitted on April 15th, 2011 number 61/476,188, the U.S. Provisional Patent Application of submitting on July 4th, 2011 number 61/504,295 and the U.S. Provisional Patent Application submitted on October 28th, 2011 number 61/553,067 priority, these applications are combined in this with its full content separately by reference.

Invention field

Present invention relates in general to cover at least one of the nose of a user and mouth to supply under positive pressure the face shield of breathing gas.More particularly, some aspect of the present invention relates to following this class face shield, and these face shields have the bridge of the nose hermetic unit that another hermetic unit with respect to this face shield moves.

Background technology

Face shield can be used for to user, providing breathing gas under positive pressure.At the mouth of user and nose, all in capped configuration, full face mask typically will overlay on the bridge of the nose.A single sealing member is generally by the nose around this user and mouth.

Conventionally with headgear, this class full face mask is fixed on the head of user.In order to reduce fully gas leakage, typically this headgear to be tightened, this causes having applied the pressure of a rising on the bridge of the nose of user.In other words, because this headgear is tightened, silicone seal typically applies a load increasing gradually on the bridge of the nose.This pressure can be a uncomfortable source and As time goes on may cause decubital ulcer in some cases.

Summary of the invention

A target of this disclosure is to provide and will improves at least to a certain extent above problem or will at least to the public or medical circle, provide a kind of one or more structures and/or method of useful selection.

Therefore, provide a kind of for the interface of positive pressure respiration therapy is provided.This interface comprises a face shield assembly.This face shield assembly comprises a mask seal part and a face shield basis, and this face shield basis is connected on this mask seal part removedly.This mask seal part comprises a mask seal part fixture, and this mask seal part fixture is larger than the rigidity of at least a portion of this mask seal part.The configuration of this mask seal part fixture is cup-shaped substantially, has near-end and the far-end being generally closed of an opening.One substantially pentagonal antelabium around this proximal extension.This mask seal part fixture comprises an arc top with outer surface.Along this outer surface, near extreme on the top on this top between a pair of hinge point, define one section of mask seal part fixture arc length.Article one, hinge axes laterally extends across the face shield assembly between these two hinge points, and at least a portion on this top of this mask seal part fixture is oriented in the vertical direction higher than this hinge axes.The top of this mask seal part fixture comprises a stayed surface.One extends through this face shield fixture and enters among the chamber being limited by this mask seal part at central passage substantially.This mask seal part comprises a flexible upper on the nasal region that is configured to need to be positioned at a user.This mask seal part top is positioned in the vertical direction higher than this hinge axes.This mask seal part top comprises a region with the stiffness reducing between two regions of stiffness with increase.This region with the stiffness reducing can rolling (rolling) to allow this mask seal part top to carry out pivotable with respect to this mask seal part fixture.One of region of these two stiffness with increase is oriented to be adjacent to a minor radius bending section and these two to be had another in the region of stiffness of increase and is oriented to be adjacent to a strengthening part.This minor radius bending section and this strengthening part define ，Gai top, two borders and between these two borders, show rolling around the top of this face shield in the process of this pivot axis.This mask seal part top has first length of curve that is adjacent to this minor radius bending section and second length of curve that is adjacent to this reinforcement band.This first length of curve can be less than this second length of curve.This length of curve is along with measuring position moves away this mask seal part fixture and increases.This face shield basis overlays at least a portion of this mask seal part fixture.This face shield basis comprises first depression and second depression.This first depression and this second depression are to locate symmetrically with respect to a central plane on this face shield basis of substantially halving.This first depression and this second depression comprise the vertical size that is greater than lateral dimension separately.This face shield basis also comprises a wall that defines a central opening.This wall extend to seal fixture this substantially in central passage.A connectivity port assembly comprises the elbow ending in a spherical component.The size of this spherical component is determined to be and is configured to need to be held by this wall that limits this central opening.This connectivity port assembly also comprises a removable rotating member.This removable rotating member is fixed by a lever.This lever overlays on a port.This port optionally can cover with a flap.This flap also can be closed a centre gangway in this elbow.When this elbow is connected on this face shield, this port openings is in the general direction in this face shield.One stature grip assembly comprises a pair of top band and a pair of bottom band.This is connected on first fixture one of bottom band one of top band and this.This is connected on second fixture another in the band of bottom another and this in the band of top.This first fixture and this second fixture can be fixed in these depressions on this face shield basis, moved up these fixtures are engaged in these depressions like this by a side being approximately perpendicular to band tension direction.

In some configurations, this mask seal part is a full face mask.

In some configurations, this mask seal part fixture is integrated in this mask seal part, and it is inseparable making like this this mask seal part fixture and this mask seal part.

In some configurations, this face shield basis is connected on this mask seal part removedly.

In some configurations, the outer surface rolling on this top is to the stayed surface of this mask seal part fixture, and this stayed surface defines an outer surface on the top of this mask seal part fixture.

In some configurations, to compare with these regions with the stiffness of increase, this region with the stiffness reducing comprises a region with the thickness reducing.

In some configurations, the top of this mask seal part comprises by first wall and a summit that the second wall limits, and this strengthening part is along at least a portion of this first wall with extend along at least a portion of this second wall.Preferably, this strengthening part extends across this summit on the top of this mask seal part.

In some configurations, a position higher than these hinge points is all ended on vertical direction roughly at the two ends of this strengthening part.

A kind of face shield assembly can comprise a mask seal part.This mask seal part comprises a top and a bottom.This top is pivotable with respect to this bottom.This top comprises a region with the stiffness reducing, and this zone location is between first border and a second boundary.This first border is to be limited by the large degree without a break of stiffness having than this in region of the stiffness reducing.This second boundary is to be limited by the large degree without a break of stiffness having than this in region of the stiffness reducing.When this first border is when this second boundary moves, this region with the stiffness reducing on a single direction curling (buckle) to limit a material rolling section (roll of material), this material rolling section is along with this first border continues move and change in size towards this second boundary.

In some configurations, this region with the stiffness reducing is conducive to the top of sealing member with respect to the movement of the bottom of sealing member.Preferably, this top comprises a bridge of the nose part of this face shield, and this nose bridge that this first border is conducive to this face shield towards the movement of this second boundary is divided the movement with respect to this bottom of this face shield.

In some configurations, this second boundary is positioned between Yu Gai bottom, this top.Preferably, this face shield further comprises a mask seal part fixture of the rigidity for this mask seal part with increase, and this second boundary is to locate along an end of this mask seal part fixture.More preferably, this material rolling section overlays at least a portion of this mask seal part fixture.

In some configurations, this first border limits along a strengthening part.Preferably, this strengthening part comprises a plastics band.

In some configurations, this region with the stiffness reducing is defined as for this first border, to have the thickness reducing.

In some configurations, this second boundary is to be limited by a turning with minor radius.

In some configurations, this rolling section is extended at least a portion of this mask seal part.

In some configurations, when this first border is when this second boundary moves completely, this rolling section overlays at least a portion of this mask seal part fixture.

A kind of face shield assembly can comprise a mask seal part.This mask seal part comprises a nasal region and a mouth region.He Gai mouth region, this nasal region is that integral type forms.This nasal region is with respect to this mouth region movably, makes like this to be caused by the large maintenance of applied force in a plurality of positions of this nasal region constant, and is increased by this mouth region applied force.

A kind of face shield assembly comprises the mask seal part being connected on a stature grip assembly.This mask seal part is configured for nasal bridge region and the mouth region around a user.This mask seal part comprises the device that simultaneously this mouth region is applied the aptychus of cumulative power for this nasal bridge region being applied to the power of a constant when headgear assembly is tightened.

A kind of face shield assembly comprises a sealing member.The seal comprises a facial flange that engages a user.The seal is connected on a face shield basis removedly.This face shield basis comprises first opening and second opening.This first opening and this second opening receive first fixture and second fixture from a relevant header grip assembly.This face shield basis further comprises the path being positioned at generally between this first opening and this second opening.This path is adapted to for receiving an air tube adapter.

In some configurations, this face shield assembly further comprises a mask seal part fixture, and this mask seal part fixture is connected on this mask seal part and is connected to removedly on this face shield basis.Preferably, this face shield basis overlays in the substantive part of this mask seal part fixture.More preferably, this face shield basis comprises a neighboring, and along the neighboring on face shield basis, define at least one depression in the position overlaying on this mask seal part fixture.

A kind of face shield assembly comprises a mask seal part.This mask seal part comprises and being adapted to for contacting a facial proximal rim of a user.This mask seal part comprises that one towards the surface of far-end.A face shield basis comprises a neighboring, and a covering surfaces extends from this neighboring.This face shield basis covering surfaces overlays on being somebody's turn to do in surperficial at least a portion of far-end of this mask seal part, make this face shield basis covering surfaces on a distal direction with spaced towards far-end of this mask seal part, the surface towards far-end of this face shield basis covering surfaces and this mask seal part provides a kind of minimizing dampness rain to wash the buffer action of (humidity rainout) to this face shield assembly thus.

A kind of headgear assembly is configured for a face shield assembly is fixed on the head of a user.This headgear assembly comprises a belt assembly.This belt assembly comprises postbrachium, upper arm and a underarm and at least one bizet arm (crown arm).This upper arm and underarm define a plurality of arc areas, and the shape of these arc areas is determined to be at least in part around the ear of a user.Soft edging is attached at least a portion of periphery of this belt assembly.

In some configurations, this belt assembly comprises that a semi-rigid band and this softness edging are docked on this semi-rigid band and is not overlapping with this semi-rigid band.In some configurations, this semi-rigid band comprises that first thickness and this softness edging comprise second thickness, and wherein this first thickness and this second thickness are roughly the same.In some configurations, this semi-rigid band comprise a thickness and this softness edging at least one region than this thin thickness.In some configurations, this semi-rigid band comprise a thickness and this softness edging thicker than this thickness at least one region.In some configurations, this softness edging forms a bulbous end portion of this semi-rigid band.

A kind of clamp assembly is configured for headgear is fixed on a face shield assembly.This clamp assembly comprises an enclosing cover and an inner lock buckle (inner catch).This inner lock buckle is configured for and is attached to this outer covering, thereby is retained on the one or more bands from a stature grip assembly.This inner lock buckle comprises a microscler line of rabbet joint and a circular open.This microscler line of rabbet joint can and can have a width transverse to this microscler axis along a microscler Axis Extension.This circular open can have a diameter that is greater than this width.When band is attached on this enclosing cover and this inner lock buckle, this microscler axis extends along a direction transverse to these bands.

A kind of elbow assembly is configured for a face shield assembly is connected on an air conduit.This elbow assembly comprises an elbow.This elbow comprises inner and outer wall and between this inwall and outer wall, defines an Air Flow raceway groove.This inwall comprises a port in a side of this elbow.A sleeve and this elbow are connected.This sleeve comprises a flap.When this flap is during in a primary importance, this flap blocks at least in part this port and allows passes to a user from the gas of this air conduit via this elbow, and when this flap is during in a second position, this flap blocks this air conduit at least in part, thereby allows gas from this user, to flow to a position of this sleeve outside via this port and this Air Flow raceway groove.This Air Flow raceway groove can guide air to leave this side of this elbow.

In some configurations, this Air Flow raceway groove comprises two Air Flow raceway grooves.In some configurations, this sleeve further comprises the protrusion (bump) extending around an outer surface of this sleeve and a depression that is adjacent to this protrusion.In some arrange, this protrusion and this depression are adapted to for receiving a rotary part, and this rotary part is combined with a ridge for engaging with this protrusion.

Accompanying drawing explanation

With reference to the following drawings, these and other features, aspect and the advantage of embodiments of the invention are described.

Fig. 1 adorns oneself with according to some feature of the present invention, aspect and advantage to arrange and the front view of the user of an interface configuring.

Fig. 2 is the side view of user of wearing the interface of Fig. 1.

Fig. 3 is the perspective view of mask seal part dough-making powder shield closure fixture of the interface of Fig. 1.

Fig. 4 is the side view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Fig. 5 is the rear view of the mask seal part fixture of Fig. 3.

Fig. 6 is the rear front view of the mask seal part fixture of Fig. 3.

Fig. 7 is the side front view of the mask seal part fixture of Fig. 3.

Fig. 8 is the top plan view of the mask seal part fixture of Fig. 3.

Fig. 9 is the anterior elevational view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 10 is the rear front view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 11 is the side front view of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 12 is the amplification cross sectional view of a part of the mask seal part dough-making powder shield closure fixture of Fig. 3.

Figure 13 is the front perspective view on mask seal part, mask seal part fixture and the face shield basis of the interface of Fig. 1.

Figure 14 is the cross sectional view on mask seal part, mask seal part fixture and the face shield basis of Figure 13.

Figure 15 is the side front view on mask seal part, mask seal part fixture and the face shield basis of Figure 13.

Figure 16 is the top plan view on mask seal part, mask seal part fixture and the face shield basis of Figure 13.

Figure 17 is the perspective view of the connectivity port assembly of Fig. 1.

Figure 18 is the side front view of the connectivity port assembly of Figure 17.

Figure 19 is the rear front view of the connectivity port assembly of Figure 17.

Figure 20 is the sectional side front view of the connectivity port assembly of Figure 17.

Figure 21 is the cross-sectional perspective view of the connectivity port assembly of Figure 17.

Figure 22 is the perspective view of the clamp assembly of Fig. 1.

Figure 23 is the cross sectional view of the clamp assembly of Figure 22.

Figure 24 is a cross sectional view that is similar to the cross sectional view of Figure 12, shows a mask seal part that is configured for rolling under a part for mask seal part fixture 112.

Figure 25 is the cross sectional view that is similar to the cross sectional view of Figure 14, and wherein mask seal part fixture has the size reducing.

Figure 26 is the cross sectional view that is similar to the cross sectional view of Figure 14, has wherein omitted mask seal part fixture.

Figure 27 is the another one cross sectional view that is similar to the cross sectional view of Figure 14, has wherein omitted mask seal part fixture.

Figure 28 shows that load (or power) on user health and the diagram of the functional relationship between face shield elongation describe.

Figure 29 is the perspective view of a skeleton compatible with the headgear assembly of Fig. 1 and Fig. 2.

Figure 30 is the zoomed-in view of end regions of a underarm of Figure 29.

Figure 31 is the amplification cross sectional view of the end regions of Figure 30.

Figure 32 is the perspective view that comprises a face shield assembly of a face shield, a plurality of fixture and a plurality of bands.

Figure 33 is the side view of one of two fixtures of Figure 32.

Figure 34 is the decomposition view of the fixture of Figure 33.

Figure 35 is the top view of inner lock buckle of the fixture of Figure 33.

Figure 36 is the front view on a face shield basis, and this face shield basis has two erection columns, and an inner lock buckle of a fixture is installed on left erection column.

Figure 37 is the front view of the another kind of configuration on a face shield basis, and this face shield basis has two erection columns, and a fixture of another kind of configuration is installed on the left erection column on this face shield basis.

Figure 38 to Figure 47 is the multiple other configuration of fixture and relevant face shield and erection column.

Figure 48 is the side view of the another kind of configuration of a rotary components.

Figure 49 is the decomposition view of the rotary components of Figure 48.

Figure 50 is the cross sectional view that the line 50-50 along Figure 48 gets.

Figure 51 is the cross sectional view that the line 51-51 along Figure 48 gets.

Figure 52 is the side view that is attached to the skeleton of the Figure 29 on user head.

Figure 53 is the rear view that is attached to the skeleton of the Figure 29 on user head.

Figure 54 is the perspective view having with a kind of flexible headgear of the abaculus (panel) using together with face shield assembly in respiratory therapy field.

Figure 55 is the zoomed-in view of end regions of the arm of Figure 54, and this end regions has the fabric clasp joint sheet (tab) of the embedding being attached on it.

Figure 56 is the perspective view of the end regions of Figure 55.

Figure 57 A is the rearview of a headgear before a plurality of underarms to headgear apply power, and this headgear does not have abaculus to be attached on test model.

Figure 57 B is the rearview of the headgear of Figure 57 A, has shown a displacement for band part behind of this headgear when a plurality of underarms to headgear apply a power.

Figure 58 A to Figure 58 D be can be compatible for the multiple alternate configuration of the abaculus that uses together with the headgear with Figure 54.

Figure 59 is an assembly that is combined with the headgear with wing formula bracelet (winged buckle) connection.

Figure 60 is a part with the headgear of wing formula bracelet connection.

Figure 61 is the top view for a wing formula bracelet of the wing formula bracelet connection of Figure 59.

Figure 62 is the side view for the wing formula bracelet of the wing formula bracelet connection of Figure 59.

The specific embodiment

First see figures.1.and.2, show an interface 100 in place on a user U.Interface 100 comprises can be for a kind of interface in respiratory therapy field.Interface 100 has special practicality for the positive pressure respiration therapy of various ways.For example, interface 100 can be for giving continuous positive airway pressure (" CPAP ") treatment.In addition, interface 100 can be for variable positive airway pressure (" VPAP ") treatment and BPAP (" BiPAP ") treatment.This interface can be for any suitable CPAP system.

Interface 100 can comprise any suitable face shield configuration.For example, some feature of the present invention, aspect and advantage go for nose cup, full face mask, oral nose mask or any other malleation face shield.The face shield of showing is a full face mask.The interface 100 of showing comprises a face shield assembly 102, connectivity port assembly 104 and a stature grip assembly 106 generally.

With reference to Figure 13, face shield assembly 102 comprises a mask seal part 110 and a face shield basis 114 generally, and this mask seal part can comprise a mask seal part fixture 112.As will be described, mask seal part fixture 112 is preferably connected to mask seal part 110 on face shield basis 114.Although the mask seal part 110 dough-making powder shield closure fixtures 112 of showing are formed separately and are fixed together, in some configurations, mask seal part 110 dough-making powder shield closure fixtures 112 can be integrated into a single part.In some configurations, mask seal part 110 is wrapped by and is molded on mask seal part fixture 112.

With reference to Fig. 3, mask seal part fixture 112 be specific surface shield closure 110 relatively more rigid, more stiffening or more unbending.In some configurations, mask seal part fixture 112 is to be formed by a kind of makrolon material.In some configurations, at least a portion of mask seal part fixture 112 is to be formed by a kind of makrolon material or other rigidity or semi-rigid material.In some configurations, mask seal part fixture 112 is by silicone or another kind of suitable material, to be formed at least partly.In such configuration, compare with the more flexible part of mask seal part 110, at least the silicone of this mask seal part fixture 112 part can form relatively thick.In shown configuration, mask seal part fixture 112 opposite shield closures 110 provide structural support.

As shown in Figure 14, mask seal part fixture 112 can limit the major part of face shield assembly 102.As directed, the face shield basis 114 of showing overlays on the signal portion of mask seal part fixture 112.With reference to Figure 25 to Figure 27, as desired, face shield assembly 102 can be configured to have multiple different structure.For example, with reference to Figure 25, mask seal part fixture 112 extends a finite quantity from the seam with mask seal part 110.In the configuration of showing in Figure 25, face shield basis 114 overlays at least a portion of mask seal part fixture 112, and the surrounding of mask seal part fixture 112 parts at mask seal part 110 defines a very limited wheel rim shape configuration.With reference to Figure 26, mask seal part fixture is all omitted and mask seal part 110 is directly coated and is molded on face shield basis 114.Yet in some configurations, mask seal part 110 and face shield basis 114 can be configured to make these two parts to separate.For example, as shown in Figure 27, mask seal part 110 can comprise a peripheral outer lips 111, and face shield basis 114 can comprise an outer peripheral groove 115 that receives this peripheral outer lips 111, makes like this mask seal part 110 to be fixed to removedly on face shield basis 114.In some configurations, can mask seal part 110 be fixed on face shield basis 114 by other suitable modes.In addition, although the configuration that Figure 27 shows shows an embodiment who there is no mask seal part fixture 112, mask seal part fixture 112 and face shield basis 114 have been combined into face shield basis 114.

With reference to Fig. 5, the mask seal part fixture 112 of showing comprises a roughly cup-shaped configuration.A near-end 120 defines an open end of shown mask seal part fixture 112, and far-end 122 defines the end of a general sealing of shown mask seal part fixture 112.In shown configuration, near-end 120 generally by 124 of antelabium around.When observing from the back side, antelabium 124 is generally pentagonal (referring to Fig. 5).As shown in Figure 7, a wall 126 generally skims over forward in a kind of mode of arc.The arcuate shape of wall 126 provides a kind of 3-d modelling to shown mask seal part fixture 112.

Continuation is with reference to Fig. 7, and the configuration on a top 130 of the mask seal part fixture 112 of showing is arcs substantially.In addition, this of the mask seal part fixture 112 of showing the substantially configuration of arc is configured for and holds larger nose, but it is large like that on nose, to extend up to the elongation of image planes shield closure 110, goes out as shown in Figures 1 and 2.

First with reference to Fig. 3, the top 130 of the mask seal part fixture 112 of showing preferably includes two arc sizes.First, can be along the top on the top 130 of shown mask seal part fixture 112 extremely limit an arc length 132.Arc length 132 can be limited between two flex points 134 finding out along the girth of the mask seal part fixture 112 of showing.

The top 130 of the mask seal part fixture 112 of showing as show in Figure 7, also comprises a side profile radius 136.As directed, top 130 can have a cumulative a little side profile radius 136, so that increase a little along with the distance apart from upper end increases this radius.In some configurations, top 130 can comprise side profile radius 136 or a side profile radius decrescence of a constant.Advantageously, this cumulative a little side profile radius 136 in face shield 100, the volume of an increase is being provided near the nose place of user.

With reference to Fig. 3 and Fig. 6, mask seal part fixture 112 preferably includes at least two depressions 140.In shown configuration, mask seal part fixture 112 comprises two depressions 140, and these two depressions are disposed in both sides (referring to Fig. 6) of vertical central plane CP substantially.This substantially vertical central plane CP preferably corresponding to the median plane of user and shown mask seal part fixture 112 is divided into the two halves that roughly become mirror image.These two depressions 140 define two depressions that are generally surrounded in shown mask seal part fixture 112.The depression 140 of showing comprises a plurality of other depressions 142, is used for for discussed below former thereby provide enough gaps, restriction simultaneously to enter the amount of the invader in the nasal region of the chamber being limited by face shield assembly 102.

The mask seal part of showing also comprises the cardinal principle centre gangway 144 being limited by a wall 146.In shown configuration, wall 146 generally surrounds passage 144.Preferably, the configuration of wall 146 is columniform and extend through wall 126 substantially.Other configurations are possible.

With reference to Figure 14, mask seal part 110 comprises a flexible portion, and this flexible portion deviates from the near-end 120 of mask seal part fixture 112 and extends.In shown configuration, mask seal part 110 is wrapped by and is molded on mask seal part fixture 112 and makes mask seal part 110 and mask seal part fixture 112 be combined to form an inseparable assembly integration and preferred.In some configurations, attempt parting plane shield closure 110 dough-making powder shield closure fixtures 112 and can cause the damage of this interface between these parts and/or the damage of the one or both in mask seal part 110 dough-making powder shield closure fixtures 112.As described above, also can mask seal part fixture 112 be connected on mask seal part 110 with other assemblies.Yet the configuration of showing has advantageously produced a kind of structure easy to clean and that safeguard.

With reference to Fig. 4, mask seal part fixture 112 is preferably arranged to make it to flush generally with an inner rim 150 of mask seal part 110.In shown configuration, mask seal part 110 comprises a relative minor radius part 152 that connects a top 154.The top 154 of mask seal part 110 is configured for the nasal region that extends across user.In some configurations, top 154 is configured for a ridge area that extends across user U.

Top 154 is to be connected with the bottom 156 of containment member 110.As show in Figure 9, bottom 156 laterally stretches out from mask seal part fixture 112.In addition, as respectively, at Fig. 4 and demonstrated in Figure 10, bottom 156 holds backward and inwardly.On the nearside of full face mask assembly 102,154He bottom, top 156 is combined and is limited together a flange 160 that contact is facial, has shown that this contacts facial flange in Figure 10.Contact under the lower lip that facial flange 160 is configured in user, along the outside of mouth, extend, along cheekbone, extend upward and extend across the bridge of the nose of this user.The flange 160 of the contact face of therefore, showing defines an opening 162 for tear-drop shaped substantially.In the time of on the face that face shield assembly 102 is placed in to user, flange 160 is upper and below lower lip by the bridge of the nose, the cheekbone, the mouth outside that lie in this user.When supply positive pressure air, mask seal part 110 will expand and be sealed on the face of user, to reduce or eliminate the probability of leaking gas between flange 160 and the face of this user.

As shown in the dotted line in Figure 11, the top 154 of mask seal part 110 is designed to rolling to an outer surface 170 of face shield assembly 102.In shown configuration, be wound into the outer surface smoother of mask seal part 110 the outer surface butt with mask seal part fixture 112, make like this outer surface of mask seal part fixture 112 form a stayed surface.In some configurations, top 154 rollings comprise at least a portion of the outer surface of mask seal part fixture 112 to this outer surface 170 on it.In some configurations, top 154 rollings almost only include the outer surface of mask seal part fixture 112 to this outer surface 170 on it.In some configurations, top 154 rollings are to another part of mask seal part 110.In some configurations, top 154 rollings are to mask seal part basis 114.

With reference to Figure 12, in order to assist the rolling on top 154, top 154 can the vicissitudinous thickness of tool or the stiffness of variation.In the configuration shown in Figure 12, top 154 comprises a kind of thick/thin/thick configuration.In other words, in order to cause that top 154 contacts rolling in a region of mask seal part fixture 112 between facial flange 160 and minor radius 152, close at this, can be in conjunction with the region 172 that degree reduces without a break.In shown configuration, the region 172 that stiffness reduces is incorporated in mask seal part 110.The region 172 that stiffness reduces has reduced or eliminated mask seal part 110 probability curling or that be adversely out of shape has occurred in the region except desirable rolling region.

Although the configuration of showing has been used a region with the thickness reducing, can the means for the region 172 that stiffness is provided reduces cause containment member 110 rollings with other.For example, can select or material behavior becomes to have by the material configuration of containment member 110 stiffness reducing by material.In addition, can provide and there is the stiffness that reduces or a region of rigidity with a kind of composite.In addition, can use the combination of any suitable technology.Yet, be configured to have the thickness that reduces shown in region 172 a kind of plain mode of realizing the region 172 that stiffness reduces is provided.In addition, by regulate that stiffness reduces the stiffness in region 172, can control for causing the required power of region 172 rollings, this power has been controlled the power on the nose that is applied to user.For example, by changing stiffness, the movement in moving range can become cumulatively or be obstructed decreasingly.

When top 154 comprises the region 172 with the stiffness reducing, under in internal pressure, as those pressure that run in positive pressure therapy scheme, outside expansion is tended on the top 154 of mask seal part 110, and this expansion is considered to not have by defining large area silicone this region 172 with the stiffness reducing of obvious structure to cause.With reference to Fig. 4 and Figure 12, the structure of enhancing is provided and provides in top 154 in order to reduce expansion in top 154, can be along top at least a portion of 154 locate one or more strengthening parts, as a band 174.With respect to silicone or form the other materials of mask seal part 110, band 174 is can be by rigidity larger or have parts that a kind of material of the stiffness feature of increase forms.For example, the region (wherein this region is to be formed by the same material that forms mask seal part 110) that thickness enlarges markedly for having the region 172 of the stiffness reducing can be used for increasing the stiffness of this strengthening part or these strengthening parts.

In some configurations, band 174 can be parts that separately form that encased by the material of mask seal part 110 at least in part.In shown configuration, band 174 can be the plastic components of a common molded, or mask seal part 110 can be wrapped by and is molded on band 174.In some configurations, band 174 can be limited by the part on top 154 for peripheral region with the stiffness of enhancing.For example but do not limit, band 174 can by have the thickness of increase a part, have and produce the different materials of stiffness that increases or part for dissimilar material properties etc. and limit.

With reference to Fig. 9, band 174 extends along at least a portion on the top 154 of mask seal part 110.When observing above, the top 154 of this face shield comprises a summit 180.Summit 180 can be restricted to a tip of mask seal part 110, a top and a top that has angle, and this summit 180 is positioned near the nose of user in use.In shown configuration, 180 places assemble on summit for first wall 182 and second wall 184.

In some configurations, at least a portion of at least a portion of the first wall 182 and the second wall 184 is strengthened by one or more parts or structure (as band 174).In shown configuration, this strengthening part or these strengthening parts (for example, as band 174) have been strengthened at least a portion of the first wall 182 and at least a portion of the second wall 184.In some configurations, this strengthening part or these strengthening parts (for example, as band 174) have been strengthened at least a portion of the first wall 182, at least a portion of the second wall 184 and summit 180.

Continuation is with reference to Fig. 9, and the band 174 of showing has a first end 186 and a second end 188 relative with first end 186.In some configurations, band 174 can form dividually and be attached on mask seal part fixture 112 by one or more compliant members with mask seal part fixture 112.In some configurations, can band 174 be connected on mask seal part fixture 112 by mechanical hinge structure.In shown configuration, first end 186 and the second end 188 are positioned in a side identical with summit 180 of hinge axes H.Preferably, first end 186 and the second end 188 are towards summit 180 and spaced apart with hinge axes H.

As shown in Figure 12, bending section 152 and being adjacent to have the stiffness reducing region 172 should for example, compared with territory, hard area (region, with thicker cross section), contribute to cause the rolling in this region with the stiffness reducing 172.In other words, under being close to compared with the assistance of hard portion, these can there is the controlled curling of this region 172 with the stiffness reducing.In addition, an edge of relatively more rigid mask seal part fixture 112 is positioned to the rolling being adjacent in the region 172 that bending section 152 places further contribute to cause that this stiffness reduces.In some configurations, the region 172 with the stiffness reducing is defined by first border and a second boundary, wherein, with respect to this, has the region of the stiffness reducing, and this first border and this second boundary have the stiffness of increase.For example, in shown configuration, this first border is limited by band 174 or this band alongside, and this second boundary is limited by bending section 152 or this bending section alongside.In some configurations, this second boundary can be limited by an edge of the larger mask seal part fixture 112 of rigidity or this edge alongside.In some configurations, can limit this second boundary along part mask seal part 110, that be positioned between the region 172 that mask seal part fixture 112 and this have the stiffness reducing.

Along with the top 154 of mask seal part 110 is about hinge axes H displacement, the size of rolling section increases.In other words, along with this first border starts to move towards this second boundary, in mask seal part 110, formed rolling section.Along with this first border continues to move towards this second boundary, the size of rolling section continues to increase.Therefore,, in configuration shown in Figure 11, in the shifting process on top 154 (as shown with dotted line), the rolling Duan Congwu defined in top 154 starts and increases gradually.Preferably, the rolling between this first border and this second boundary has produced a single bending section or zigzag part between this first border and this second boundary.This single bending section produced approach place, this bending section position, size is along with move and the supporting leg that increases towards this second boundary on this first border.In other words, the rolling being produced towards the movement of this second boundary by this first border does not preferably produce plication outward appearance, as the configuration with pleat.

Referring again to Fig. 3, mask seal part 110 can have and helps lend some impetus to a kind of geometry that rolling is continued in this region with the stiffness reducing 172 after rolling starts.In general, can be from first intersection point of hinge axes H and mask seal part 110, make progress and cross over the top 154 of mask seal part 110 and turn back to hinge axes H downwards and second intersection point of mask seal part 110, limit a plurality of arc length.

As shown in Figure 3, the mask seal part 110 of showing comprises that at least one first arc length A(is shown in broken lines), second arc length B(illustrates with imaginary point line) and the 3rd arc length C(along the base portion of band 174, illustrate).The first arc length A is preferably longer than arc length mask seal part fixture 112, that be directly adjacent to the first face shield arc length A.The second arc length B is between the first arc length A and the 3rd arc length C, and the second arc length B is preferably shorter than the 3rd arc length C and is longer than the first arc length A.In certain embodiments, these arc length stably increase towards band 174 nearsides from bending section 152 or from another region near outer surface 170.In other words, along with angle [alpha] (referring to Fig. 4) increases from the first arc length A, arc length increases generally.In some configurations,, these arc length (that is increase with angle of entry α degree) from front to back can be constant; Yet, by making these arc length deviate from the part that this rolling section starts, increasing, summit 180 being moved further on distal direction can cause the continuation rolling of mask seal part 110 on himself and on outer surface 170, as shown in Figure 11.

Referring again to Fig. 4, when profile observation from the side, the top 154 of the mask seal part 110 of showing also comprises a radius variable.As demonstrated, R1>R2>R3.Therefore, in shown mask seal part 110, radius along with the increase of angle from closely to far reducing.In some configurations, this radius does not need to reduce by this way; But radius is decrescence believed to be helpful in the rolling of mask seal part 110.

In addition, a radius r 1 mask seal part fixture 112, that start from hinge point H is preferably less than the radius R 3 of mask seal part 110.Yet, consider the mutabililty matter of mask seal part 110, radius r 1 and radius R 3 are likely roughly the same, and still make mask seal part 110 rolling on mask seal part fixture 112 simultaneously.Yet in shown configuration, the difference between radius r 1 and radius R 3 has produced a kind of compensation.This compensation provides following ability: increase a little side profile radius 136(as described above), and 110 rollings of not appreciable impact mask seal part are to the ability on mask seal part fixture 112.If this skew is not provided, the ability that increases so side profile radius 136 will be very limited.

As discussed above, flange 160 is around this opening 162 of tear-drop shape substantially.As is known, ring stress can be defined in the circumferential stress forming due to internal pressure in a cylindrical part.Therefore,, when a ring is attempted to expand, ring stress increases.It is believed that, the ring stress causing due to storing breathing mask can be a source of certain discomfort (especially in nasal bridge region) of user.The bottom 156 of the face shield assembly 102 of showing is generally secured in place, and move with respect to the nose of user on nose or top 154.Due to above-mentioned rolling action, full face mask assembly 102 rollings of showing and leave nose, this has reduced the generation of cumulative ring stress, especially around the bridge of the nose.Therefore, this wrap-up face shield configuration provides a kind of means that maintain or reduce to encircle stress for the storing process at this face shield.

As discussed above and as shown in Figure 11, in shown configuration, top 154 rolling on outer surface 170 of the mask seal part 110 of showing.In the lip-deep rolling of OFP, utilized the normal pressure being present in this full face mask assembly, because the ability that the air pressure increasing has strengthened this mask seal part rolling on himself (, in wrapup procedure, air pressure has reduced the surface tension between two surfaces of relative to each other sliding of this mask seal part), and slight expansion contributes to reduce curling, fold or undesirable folding probability of mask seal part 110.In addition,, in some configurations, this outside rolling can provide the visual cues of the top 154 of face shield mask seal part 110 with respect to displacement degree or the angle of displacement of the bottom 156 of mask seal part 110.

For a kind of indication of enhancing of degree of the rolling of top 154 of this face shield is provided to user, likely adopt a visual indicator.For example, in some configurations, on the region 172 that can reduce in stiffness or in its vicinity impression, embossing or otherwise arrange a scale.In some configurations, can a part of rolling thereon be located to a scale along region 172 face shield 100, that this stiffness reduces.In order to improve degree of accuracy, this scale preferred orientation in one central location in and the rolling degree in the region 172 that this stiffness reduces can be maximized.For example but do not limit, this scale can be a digital scale or a color gradient scale.

In some configurations, a ratchet or locking mechanism and this face shield can be combined, make the region 172 that stiffness reduces can be set at a desirable rolling point place.For example, can use a ratchet mechanism (for example, Zipper-type ratchet) with a series of teeth that engaged a closure element.When the top 154 of this face shield is shifted about hinge point, when face shield 100 is removed from the face of user U, this locking mechanism makes top 154 can be maintained at appropriate position.Preferably, this locking mechanism allows as desired easily lock release position, if make like this this face shield be moved too far, this top can be unclamped in a better cooperation position.Therefore, only once, and each follow-up use all will produce the rolling section of par to the degree that this user can be set top 154 rollings.

By rolling, top 154(, that part that touches the bridge of the nose of sealing member) along with the flange 160 of this face shield face to this user applies cumulative pressure and moves.Due to this movement, in the wide pressure limit applying on the facial remainder in bottom 156 at this user, top 154 applied force on the bridge of the nose is constant.Similarly, cause that it is constant that required power is moved on top 154.As shown in Figure 28, the complete 25mm that the configuration of showing has produced the position on this top changes, and the power relevant to the movement of this scope has the increase that is less than about 0.5N.Because the power being applied on nose is constant generally in a series of angles and in relevant top displacement, therefore, under different headgear tension level, there is not significant change in the power being applied on the bridge of the nose.Again, shown such result in Figure 28, wherein, in summit 180 is in the moving range of 5mm to 25mm, the power that total change of power produces about 0.2N changes.Therefore in addition,, because the power being applied on nose is constant generally in a series of angles, can adjust this face shield and improve and the coordinating of various facial geometry, and restriction is applied to the pressure in responsive nasal bridge region simultaneously.

When be characterized as while comparing with the structure of the geometry of pleat, the use of wrap-up configuration provides significant improvement.First, outside rolling but not the pleating material that reduces or eliminated mask seal part invades the probability in the chamber that is designed to comprise user nose.Therefore, outside rolling has reduced the probability contacting with user nose in this chamber in respect to the moving process of bottom 156 on top 154.Secondly, outside rolling but not the pleating quantity that clean outward appearance is provided and has reduced external cavity it is believed that Comparatively speaking this and the assembly with pleat have improved the consciousness of user to this full face mask assembly.

With reference to Figure 24, although mask seal part 110 rolling on outer surface 170 of showing, this mask seal part can be configured in the rolling of the inside of this face shield assembly.In other words, in some configurations, can use inner rolling.With respect to outside rolling, inner rolling is more undesirable, because normal pressure is tended to hinder rolling and tended to invade in the chamber that receives nose because rolling is moved.On the other hand, with respect to outside rolling, inner rolling provides more clean outward appearance, because within any expansion of containment member is all comprised in mask seal part fixture.

Referring now to Fig. 1 and Fig. 2, face shield assembly 102 comprises face shield basis 114, and the rigidity of this face shield basis specific surface shield closure 110 is larger.Face shield basis 114 can be formed by any suitable material.In some configurations, face shield basis 114 is to be formed by a kind of makrolon material, make like this its can deflection for being connected with mask seal part 110 and/or mask seal part fixture 112.

Referring now to Figure 14, show face shield assembly 102, wherein face shield basis 114 is fixed on mask seal part 110.More particularly, in shown configuration, face shield basis 114 is fixed on mask seal part fixture 112, and mask seal part fixture is to be attached in any suitable manner on mask seal part 110.In some configurations, face shield basis 114 is connected removedly with mask seal part 110 or mask seal part fixture 112.In some configurations, face shield basis 114 is fastened togather with the one or both in mask seal part 110 dough-making powder shield closure fixtures 112.Preferably, mask seal part 110 dough-making powder shield closure fixtures 112 can remove from face shield basis 114, and buckle connection is fixed to mask seal part fixture 112 on face shield basis 114.

With reference to Figure 14 and Figure 15, the face shield basis 114 of showing overlays at least a portion of mask seal part fixture 112.In some configurations, face shield basis 114 is enveil sealing member fixture 112 almost completely.In some configurations, face shield basis 114 has extended across the over half of mask seal part fixture 112.When face shield basis 114 overlayed on the substantive part of mask seal part fixture 112 or mask seal part 110 when upper, produced a kind of double-deck effect (for example, mask seal part fixture 112 and face shield basis 114).When the signal portion on face shield basis 114 and the signal portion overlaid of mask seal part fixture 112 or mask seal part 110, this bilayer effect provides the buffer action increasing.The buffer action of this increase provides a warmer inside (for example mask seal part 110 and/or mask seal part fixture 112), and in use this has produced moisture condensation still less.Preferably, at least a portion of mask seal part fixture 112 comes out from 114 belows, face shield basis, and making can be more easily separated with mask seal part fixture 112 by face shield basis 114.As shown in Figure 15, in order to assist face shield basis 114 from mask seal part 110 and/or 112 separation of mask seal part fixture of below, the face shield basis 114 of showing comprises an outer surface 200 on near-end.Face shield basis 114 on inner side, be concavity with a plurality of parts below holding.In other words, face shield basis 114 is bowl-type on the distal direction with respect to near-end outer surface 200.

Outer surface 200 comprises one or more recessed portions 202.Preferably, recessed portion 202 comprises at least two recessed portions 202 on the both sides opposite each other that are positioned at face shield basis 114.Recessed portion 202 is configured for and receives thumb and a finger, makes so more easily face shield basis 114 to be removed from the front of the mask seal part fixture 112 of below.Although recessed portion 202 can be defined for grasp 114 belows, face shield basis assembly to remove the device on this face shield basis, also can use multiple other configurations, such as but not limited to outward extending contact pin, extension etc.In addition,, although the recessed portion 202 of showing is disposed on the two opposite sides on face shield basis 114, these recessed portions 202 also can be positioned on top and bottom or other regions as desired.

As shown in Figure 13, face shield basis 114 preferably includes the opening 210 being limited by a wall 212.With reference to Figure 14 (being a cross section through mask seal part 110, mask seal part fixture 112 and face shield basis 114), defining this wall 212 through the opening 210 on face shield basis 114 and be preferably engaged in this wall 146 defining through the passage 144 of mask seal part fixture 112.As shown in Figure 14, wall 212 can be axially common extension with wall 146.In addition, the size and dimension of wall 146, wall 212 can be so that these walls interact to reduce relative sliding between wall 146, wall 212 and reduce mask seal part basis 114 and probability inadvertently separated in mask seal part fixture 112.In some configurations, wall 146, wall 212 are combined together and have reduced by the probability of the interface gas leakage between these two walls.Preferably, a taper lock is fixed together wall 146, wall 212.

Still, with reference to Figure 14, wall 212 comprises the inner surface 214 of a belt profile.The radius on the surface 214 of belt profile can be through determining to receive a pommel 220 of a turning gland 222, as show in Figure 17 that.As shown better in Figure 18, pommel 220 has the surface 224 of a belt profile, and the surface of this belt profile can be snap fit onto in the surface 214 of formed this belt profile in face shield basis 114.Connection between the surface 214,224 of these two belt profiles allows these surfaces relative to each other freely to slide, and makes so easily to change the position of turning gland 222.In some configurations, elbow 222 can be configured for and in the situation that there is no spherojoint configuration, rotate or rotation.

Referring again to Figure 13, face shield basis 114 also comprises at least two depressions 230.The face shield basis 114 of showing comprises two depressions 230.Depression 230 retrudes are stretched out backward in face shield basis 114 and from face shield basis 114.Depression 230 is received in the depression 140 of mask seal part fixture 112.A plurality of openings 232 overlay in these other depressions 142 that form in mask seal part fixture 112, and these openings are limited by a perisporium 234.

The depression 230 of showing is formed the every side making on face shield basis 114 and all forms a depression 230.It is symmetrical that these depressions 230 can be oriented to respect to central plane CP, and this central plane has roughly been divided face shield basis 114 equally.In some configurations, as shown in Figure 15, depression 230 has the vertical size 240 having expanded with respect to a lateral dimension 242.Similarly, as shown in Figure 15, opening 232 has the vertical size 244 having expanded with respect to a lateral dimension 246.

In shown face shield basis 114, the side direction of each depression 230 inwardly part comprises a supporting walls 250.Supporting walls 250 is oriented to respect to the normal of a substrate surface 248 of depression 230 and towards central plane CP.Each in these two depressions 230 is configured for and receives a fixture 252(referring to Figure 22).Once fixture 252 has been installed in depression 230, supporting walls 250 just helps restriction fixture 252 with respect to the rotation of depression 230.In addition,, in installation process, this large vertical size contributes to user is positioned at depression 230 with fixture 252 together with.

With reference to Figure 22, fixture 252 can have a kind of two-part structure: an enclosing cover 254 and an inner lock buckle 256.Can in any suitable way band 260 be fixed on each fixture 252.In Fig. 2, shown a kind of suitable configuration.In some configurations, band 260 can be clipped between enclosing cover 254 and inner lock buckle 256.In some configurations, can on fixture 252, provide band 260 by a plurality of rings that pass or opening or hole.Preferably, a fixture 252 can be connected on a top band and a bottom band of headgear assembly 106 simultaneously.Such configuration is conducive to headgear assembly 106 to be easily connected on full face mask assembly 102 and by headgear assembly 106 and full face mask assembly 102 and easily to disconnect.

As shown in Figure 23, fixture 252 comprises an inclined surface 262.Inclined surface 262 can be positioned on enclosing cover 254.Inclined surface 262 and supporting walls 250 cooperations help fixture 252 to carry out orientation with respect to the depression 203 on face shield basis 114.

Fixture 252 comprises an interlock feature 264.Interlock feature 264 is arranged to and is inserted in the opening 232 defined in the depression 230 on face shield basis 114.Interlock feature 264 can engage with the contact pin 236 limiting along wall 234 by the mode being clasped, and this wall defines the opening 232 in face shield basis 114, as shown in Figure 13.Also the mode that can use other that fixture 252 and depression 230 are interlocked.

With reference to Figure 23, the interlock feature 264 of the fixture 252 of showing comprises U-shaped parts 268 that end at a trip lever 266.U-shaped end 268 stretches out enough distance and is connected with contact pin 236 allowing, but the bottom prevention interlock feature 264 that does not reach the other depression 142 in allowing mask seal part fixture 112 is correctly inserted in opening 232.Fixture 252 is being connected in the process on face shield basis 114, and U-shaped end 268 contacts with a wall of opening 232 at first.In shown configuration, U-shaped end 268 contacts the wall 234 of this opening 232 during insertion, and wall 234 is in place in the interior guiding of depression 230 by fixture 252.Fixture 252 is being connected in the process on face shield basis 114, and opening 232 or the one or more surfaces that limit this opening 232 make fixture 252 aim at respect to face shield basic 114 conventionally.

Stretch out and through an opening 270 being limited by a wall 272 end of trip lever 266.Preferably, the end of trip lever 266 is stretched out and is passed 270 1 sections of enough distances of opening to allow easily to handle this trip lever 266.To close the mode of the U-shaped shape of this interlock feature 264, move this trip lever 266 and allow interlock feature 264 from removing with the engaging of contact pin 236, this contact pin is arranged in this wall 234 of the opening 232 that defines face shield basis 112.

Figure 32 to Figure 39 has shown the multiple other configuration of clamp assembly 252, and these configurations are configured for face shield assembly 102 is fixed on the head of a user.For example, the fixture 252 of Figure 32 and Figure 33 has a protruding edge 400(and is also sometimes referred to as a finger-like contact pin 400), this protruding edge can easily separate headgear 106 and face shield assembly 102 this user.The edge 400 of projection may be oriented to and makes, and user only pulls back them just can make fixture 252 114 disengagings from face shield basis.From face shield basis 114, taking off one or more fixtures 252 allows face shield assembly 102 easily from the head of user, to remove.In headgear 106 is carried out to attached and process that remove with respect to face shield assembly 102, the edge 400 of projection provides one to grasp a little.For example, in the process that fixture 252 is removed from face shield assembly 102, the thumb of user and forefinger can be placed on the two opposite sides at protruding edge 400.In addition, user can be held fixture 252 and in whole face shield engagement process, maintain this gripping effect.This has eliminated the needs that grasp blindly band 260 in assembling process.It also allow user maintaining attached this fixture 252 while being held on protruding edge 400, it is removed and again that it is attached.

Figure 34 has shown the decomposition view of the fixture 252 of Figure 32 and Figure 33.Fixture 252 comprises an enclosing cover 254 and an inner lock buckle 256.Inner lock buckle 256 comprises that one or more lines of rabbet joint 402 receive the far-end of headgear band 260.Inner lock buckle 256 can also comprise some pressure protrusions, those that shown as the configuration about Figure 38 and Figure 39.These pressure protrusions provide extra pressure on enclosing cover 254 and inner lock buckle 256, make like this them be fixed to each other and go up.In a kind of configuration, headgear band 260 is removable on the fixture 252 from assembling.

As shown in Figure 38, inner lock buckle 256 comprises a microscler line of rabbet joint 404.The line of rabbet joint 404 comprises a circular open 406, and this circular open has a diameter of the width that is greater than the line of rabbet joint 404.The line of rabbet joint 404 and circular open 406 can comprise that a plurality of depressions with chamfering aim at fixture 252 helping with face shield assembly 102.Circular open 406 is conducive to fixture 252 to be attached on face shield assembly 102 and from this face shield assembly and to remove, as discussed in more detail below.Two grooves 408 are parallel to the both sides extension of the line of rabbet joint 404, thereby define line of rabbet joint wall 410(on the either side of the line of rabbet joint 404, are sometimes called as fixture lever).The size of groove 408 is configured to for fixture 252 being attached on face shield assembly 102 and the process removing from this face shield assembly allows enough deflections of line of rabbet joint wall 410.In addition, line of rabbet joint wall 410 extends towards top and bottom along the longest dimension of inner lock buckle 256, and this allows to adopt longer line of rabbet joint wall 410.Longer line of rabbet joint wall 410 reduced by Fixture assembly to the stress level on time slot slotted wall on erection column.

A kind of configuration of having shown a face shield basis 114 of using together with the fixture 252 being applicable to Figure 32 to Figure 35 in Figure 36.Face shield basis 114 comprises two depressions 140 on the two opposite sides that is positioned at symmetrically face shield basis 114.In each depression 140, an erection column 412 extends from the body on face shield basis 114.That erection column 412 can form or be formed separately with face shield basis 114 integral types and be fixed on face shield basis 114.Erection column 412 can have the configuration of mushroom-shaped, once so that user is just fixed to fixture 256 snapped into place on face shield basis 114 by fixture 256.The dome of bulbiform mushroom-shaped post 412 contributes to the locating and orienting of medium pore 406.When fixture 252 is forced on post 412, line of rabbet joint wall 410 deviates from post 412 and is outwards offset.Once the head of post 412 is crossed the edge of line of rabbet joint wall 410, line of rabbet joint wall 410 buckles are got back to their home position, thereby provide fixture 252 to be correctly attached to tactile feedback on face shield assembly 102 and auditory feedback sometimes.

One of can also comprise that size is configured to that the microscler line of rabbet joint 404 with inner lock buckle 256 matches of erection column 412 microscler, oval-shaped, the part 414(that exceeds is sometimes also referred to as a lug or fin (wing)).This part 414 microscler, that exceed comprises that an edge with chamfering is to help that headgear 106 is correctly aimed at respect to face shield assembly 102.This part 414 can also prevent that fixture 252 from rotating with respect to face shield assembly 102.This contributes to guarantee at the user constant tension on headgear band 260 in bed.

Figure 37 has shown for a fixture 252 being fixed to the partial component of another kind of configuration again on the face shield basis 114 of face shield assembly.Fixture 252 is positioned at a depression 140 on face shield basis 114.In depression 140, a columned round head column 412 extends from the surface on face shield basis 114.When fixture 252 is attached on post 412, this post is because its columned configuration allows the fine rotation of this fixture.Yet as shown in Figure 38 and Figure 39, the line of rabbet joint 404, groove 408 and line of rabbet joint wall 410 extend towards its front-end and back-end along the shorter in-plane of inner lock buckle 256.

Inner lock buckle 256 also comprises some pressure protrusions 414.As discussed above, these pressure protrusions provide extra pressure on enclosing cover 254 and inner lock buckle 256, make like this them be fixed to each other and go up.

Figure 40 to Figure 47 has shown the multiple other configuration of fixture 252.The fixture 252 of Figure 40 comprises three microscler, oval-shaped lines of rabbet joint 404 and a finger tab 400.Finger tab 400 is used to produce a lever, for release clip 252 from a face shield assembly 102.The size of central authorities' line of rabbet joint 404 is through determining the erection column 412 extending from the outer surface of face shield body for receiving.In Figure 43, shown such a suitable erection column 412.Erection column 412 comprises a ridge 414 and two lines of rabbet joint 416.When fixture 252 is forced on erection column 412, due to the interval being provided by the line of rabbet joint 416, the deflection toward each other of the Outboard Sections of post 412.Once ridge 414 has been crossed the upper surface of fixture 252, erection column 412 is got back to its home position with regard to buckle, and ridge 414 is in place by fixture 252 lockings.

In Figure 44 to Figure 47, shown a kind of similar configuration.The fixture 252 of Figure 45 does not comprise that a finger tab and its central opening 404 have the shape round, more more oval than these microscler lines of rabbet joint of Figure 40 to Figure 44.

All these previous configuration have all been simplified face shield assembly 102 have been fixed to the program on user head.For example, fixture 252 allows headgear 106 to be opened to that to make it be not the ring of a sealing.By opening, headgear 106 can be wrapped in head above rather than force user to pull its head through this headgear.

With reference to Fig. 2, except band 260, headgear assembly 106 also comprises band 280 and a top band 282 behind.Also can use other headgear assembly.Behind band 280 is around the back side of the head of user U, on nape but generally extend a position below internal occipital protuberance generally.A position after this user ear, band 280 is branched into a upper arm 284 and a underarm 286 behind.Upper arm 284 arcs are bent-up to position of user ear top and are then bent to substantially a position in user ear the place ahead under arc.Under underarm 286 arcs, be bent to substantially a position below the ear of user and extend to a little in ear the place ahead.

Band 260 can be connected on the band 280 of behind in any suitable way.In shown configuration, band 260 is connected respectively on upper arm 284 and underarm 286.Preferably, upper arm 284 and underarm 286 are larger than the rigidity of band 260, make arm 284, arm 286 when wearing headgear assembly 106 maintain substantially shape.In some configurations, himself weight of upper arm 284 and underarm 286 each self-supportings.In some configurations, upper arm 284 and underarm 286 are all built into during wearing separately without tangling.For example, arm 284, arm 286 have the probability of enough torsional rigidities twisting when reducing to put on.

Preferably, band 260 is connected at least one in upper arm 284 and underarm 286 in a position in ear the place ahead.This configuration contributes to user not locating very much these bands 260 large difficulty in the situation that.In addition, because the band 260 in shown configuration is embedded in fixture 252, the end of upper arm 284 and underarm 286 can comprise the line of rabbet joint 290, the line of rabbet joint 292, makes like this band 260 to wear and walks around the line of rabbet joint 290, the line of rabbet joint 292.In addition, band 260 can comprise a governor motion 294, as a kind of Velcro or bracelet (buckle) configuration.Governor motion 294 allows the power between opposite shield closure 110 and the face of user U to regulate.Can use any suitable governor motion 294.

As shown in Figure 2, top band 282 is preferably flexible and have adjustable length.Top band 282 is connected on upper arm 284 by a line of rabbet joint 296 and has reduced upper arm 284 from the head down sliding of user and contacted the probability of the ear of user.Preferably, top band 282 is connected on upper arm 284 in a position above the ear that is roughly positioned at user.

Advantageously, as shown in Figures 1 and 2, band 260 applies a power in the direction of arrow F, and these bands are connected on face shield basis 114 by moving in C direction, and C direction is substantially perpendicular to the direction of power F.In other words, by pulling forward, make band 360 tensionings, and fixture 252 is connected on face shield basis 114 by the movement in the direction pulling forward perpendicular to this.Such configuration is convenient to interface 100 to be fixed on the face of user.

In another kind of configuration, headgear assembly 106 comprises that a semirigid headgear 380(is as shown in Figure 29) for face shield assembly 102 is fixed on the head of user.Semi-rigid headgear 380 is formed a composite construction, and this composite construction comprises the semi-rigid band 382 being coupled on a soft edging 384.For example, can be by plastic overmold molded or by soft edging 384 being attached on semi-rigid band 382 with binding agent.As shown in Figure 29, soft edging 384 can be docked on semi-rigid band 382, and soft edging 384 is not overlapping with semi-rigid band 382, to maintain the continuous profile of semi-rigid headgear 380.When applying tension force from band 260 face shield assembly 102 is pulled to the head of user, semi-rigid band 382 limits and maintains the shape of this semi-rigid headgear.In other words, semi-rigid band 382 is enough rigidity along its plane axis, to prevent its upper arm 284 and underarm 286 excessive deformation under tension force.Semi-rigid band 382 can be made by multiple rigidity or semi-rigid material (comprising plastics or metal).In some configurations, semi-rigid band 382 is made by PVC.

Especially about semi-rigid headgear assembly, have been found that shape keeps or the character of self-supporting can produce the black box that cooperation intuitively occurs.Specifically, in the situation that these connections and/or these headgear members be self-supporting and make them maintain three dimensional form, can the in the situation that of seldom (if any) indication, with correct orientation, assemble this headgear.In a self-supporting arranges, the tendency that these bands do not tangle has also reduced to assemble the spent time of whole assembly.

As used herein, term " semi-rigid " is used for representing, this headgear assembly be enough rigidity and headgear assembly 380 can be presented have to approach a kind of 3D shape that this headgear is designed to the size of patient's head of coordinating, simultaneously or enough flexibility and meet generally this patient's anatomy.For example, for example, in the miscellaneous part of headgear assembly 380 (, arm or band) some can be also partially or completely " semirigid ", and making like this these parts to keep is roughly a kind of three dimensional form of self-supporting.Each and all parts that " semirigid " headgear assembly is not intended to mean this headgear assembly must be semirigid.For example, the roughly three dimensional form that the headgear assembly 380 of self-supporting may present may relate generally to rear portion and the top of headgear assembly 380.In addition,, in the time of on the head that is placed on patient, semirigid headgear assembly 380 can be included in a plurality of semi-rigid region of ear the place ahead and the extension of ear top.

Upper arm 284, the underarm 286 on left side and right side can be formed by a kind of semi-rigid material equally.When this uses, semi-rigid material can comprise multiple molded plastics or sheeting, and these materials include but not limited to the non-woven fiber material of homogeneous plastic material and bonding.

In some configurations, one or more in these arms or band are to be formed by a kind of essentially no elastic material.These arms or band can be formed by a kind of semirigid self-supporting material, make so semirigid headgear assembly 380 can present roughly three-dimensional shape and not tangle substantially.In some configurations, for example but do not limit, this material can comprise having a kind of layer structure compliance and semirigid part.For example but do not limit, semi-rigid band 382 can, by elastic material a kind of self-supporting, springy, essentially no, all be put down (Santoprene), polyolefin, polypropylene, polyethylene, expanded polyolefin, nylon or non-woven polymer material as mountain and make.In some configurations, semi-rigid band 382 is to be formed by polyethylene or polypropylene series.This material can be a kind of Low Density Polyethylene, and as Dowlex2517, it is a kind of linear low density polyethylene, has the 2% secant flexural modulus of the yield tensile strength of 9.65MPa, the fracture tensile strength of 8.96MPa and 234MPa.Semi-rigid band 382 is preferably formed by following a kind of material, and this material makes semi-rigid headgear 380 no matter how its orientation all roughly maintains shape under its deadweight.In some configurations, semi-rigid band 382 stretches and is no more than about 6mm under the tensile load of 30N.In some configurations, semi-rigid band 382 stretches and is no more than about 3mm under the tensile load of 30N.

In some configurations, semi-rigid band 382 is by for example, forming by the non-woven polyolefin (NWP) of a kind of polyolefin bonding (, coated molded or lamination).In such configuration, this coated molded polyolefine material provides main shape maintains characteristic.In addition, softer NWP material is adapted to for contacting skin and desirable comfort level being provided.In addition, NWP material can supply desirable load carrying characteristic, as desired tensile load bearer properties by assisted Extraction.

Semi-rigid headgear 380 is generally to be formed by a kind of semi-rigid material.When this uses, semi-rigid material can comprise multiple molded plastics or sheeting, and these materials include but not limited to the non-woven fiber material of homogeneous plastic material and bonding.Upper arm 284 and underarm 286 also comprise this class semi-rigid material, because arm 284, arm 286 are and semi-rigid headgear 380 integral types a plurality of parts that form and that be this semi-rigid headgear.Preferably, right side and left side underarm 286 are formed in use the back side of the head around patient integral type parts extending above cervical region.

Soft edging 384 covers or is attached at least a portion of periphery of semi-rigid band 382.In a configuration, soft edging 384 do not cover semi-rigid band 382 above or below.The thickness of the position that for example, soft edging 384 and semi-rigid band 382 are bound up at it can be identical.

Soft edging 384 provides an interface that softness is comfortable between the periphery of semi-rigid band 382 and the skin of user.Soft edging 384 can be made by multiple flexible material, includes but not limited to plastics, elastomer, silicone or thermoplastic polyurethane (TPU) plastics.Soft edging 384 can have the Shore stiffness in the scope of 10 Shore A to 80 Shore A.

As used about headgear and band at this, " softness " is for describing the feel of material, the quality of this material that the reaction that means to obtain by sense of touch is assessed.In addition,, as used about headgear and band at this, " comfortable " is the ability of the anatomical features (for example,, around a facial characteristics) that goes to meet patient for describing material.Specifically, the band that comprises at least one element of being made by " softness " and/or " comfortable " material can be also " semi-rigid " and/or axially inelastic.

Soft edging 384 can have uniform thickness or in some configurations, have inhomogeneous thickness.For example, in some configurations, soft edging 384 is identical with the thickness of semi-rigid band 382.In other configurations, soft edging 384 is thinner than semi-rigid band 382, form a bulbous end portion or just thick than semi-rigid band 382 of semi-rigid band 382.A plurality of cross sectional view of semi-rigid headgear 380 have been shown in Figure 29.Each cross sectional view (A-A' is to F-F') shows a kind of possibility configuration of semi-rigid band 382 and soft edging 384 thickness, can as desired these configurations be combined.For example, any one specific soft edging 384 thickness and shape can be applied to a part for semi-rigid band 382 or on the whole or can combine with any other specific cladding thickness and shape shown in Figure 29.

Many other thickness configurations also can be provided.In addition, can apply symmetrically or asymmetrically material thickness to semi-rigid band 382.For example, cross sectional view C-C' and F-F' are shown as asymmetric; Yet in other configurations, the thickness of arbitrary end of soft edging 384 is applied on semi-rigid band 382 symmetrically.In some configurations, semi-rigid band 382 is optionally thickened the rigidity and the supporting role that provide extra.For example, second that is shown as in these two configurations of cross sectional view F-F' has such thickening.Finally, in some configurations, at whole semi-rigid headgear 380(as on semi-rigid band 382, as shown in Figure 29, or on soft edging 384) on provide a plurality of ventilation through holes 396 to provide ventilation and perspiration to manage.

As shown in Figure 29, when tiling, semi-rigid headgear 380 defines the arc area 386,388,390 of three C shapes.Two regions the 386, the 388th around ear, are limited by upper arm 284 and underarm 286, and a Background Region 390 is limited by a plurality of underarms 286 and this behind band part 280.Semi-rigid headgear 380 is enough flexible and can bend to the shape that adapts to user head, make like this around the region 386,388 of ear at least in part around or around the ear of this user, and Background Region 390 at least in part around or around this head back side more than user cervical region.

The curvature that can select each arm 280,284,286 is to provide comfortable cooperation and semi-rigid headgear 380 be applied on the head of user or removed from the head of user promoting.For example, in shown configuration, with respect to top around the opening in the arc area 386,388 of ear, these upper arm 284 have a recessed curvature and underarm 286 has a convex curvature.Band part 280 and these underarms 286 all have recessed curvature for the opening in the arc area 390 around cervical region behind.These curvature for example, provide a plurality of openings to be conducive to semi-rigid headgear 380 be applied on the head of user and remove from the head of user by () to these arc areas, and the size of these beginnings and orientation are through determining to be easily engaged on the cervical region and ear of user.

The configuration of Figure 29 has adopted and has comprised that the first bizet arm 392 and the second bizet arm 394 are for being fixed to semi-rigid headgear 380 the integral type bizet band on the head of user.Once semi-rigid headgear 380 is oriented to partly the head around this user, the first bizet arm 392 and the second bizet arm 394 are fixing in place by semi-rigid headgear 380 with regard to being in contact with one another.Can provide any so that they can be attached to each other in various mechanism to the first bizet arm 392 and the second bizet arm 394.For example, in some configurations, can use hook-and-loop fabric (for example, Velcro) or one or more buckle or fixture that the first bizet arm 392 and the second bizet arm 394 are attached to each other.

These bizet bands extend laterally collinearly with ear on skull top.When these bizet bands extend and when arc area 386,388 is oriented to partly the ear around user, the behind band 280 of semi-rigid headgear 380 should be positioned in occipital protuberance or its below by this way.The occipital protuberance of user is the most remarkable protuberance of the rear lower office occipital bone of skull.In other words, occipital protuberance is the peak of external occipital protuberance.Can semi-rigid headgear 380 be positioned on the head of user according to any in the multiple configuration of describing in appended appendix, this appendix forms the integral part of this disclosure and is all combined in this.

For example, behind band part 280 is adapted to the rear portion of the head of user and engages.Preferably, the position that band part 280 is adapted on external occipital protuberance or below it behind engages with head.Behind band part 280 striden across head back periphery distance and extend to each side of head.In some configurations, band part 280 comprises Yi Ge longitudinal center behind, and it is adapted to the approximately 25 degree places, a horizontal plane below that are positioned at the auditory meatus that extends through patient.

On the either side of head, semi-rigid headgear 380 extends and becomes left field and right side area up and down, and this left field and right side area have formed arc area 386,388.This territory, two lateral areas is adapted at patient's ear rear extends.Preferably, this territory, two lateral areas is also adapted at patient's mastoid process rear and extends.The left field of semi-rigid headgear 380 and right side area are extended separately to be become in an arcuate part 386,388 or comprises this arcuate part.Arcuate part 386,388 bend forwards.The corresponding ear that arcuate part 386,388 is adapted to this patient around extends.Preferably, arcuate part 386,388 ends at office, corresponding end portion separately.These dwell sections are preferably adapted to the ear the place ahead that is positioned at patient.In some configurations, these territories, lateral areas of semi-rigid headgear 380 and arcuate part 386,388 do not comprise a soft inside pad part, but can comprise the elasticity material of a kind of self-supporting directly contacting with head/hair of patient.

The top section of semi-rigid headgear 380 links together arcuate part 386,388.In some configurations, this top section can be positioned at ear the place ahead.Preferably, this top section is oriented to hold up generally from ear.More preferably, the longitudinal center of this top section be adapted to from and a perpendicular intersecting of auditory meatus separate backward over 13mm, preferably between 13mm and 100mm.In some configurations, this top section comprises first sections 392 and second sections 394, and wherein the first sections 392 and the second sections 394 are combined to form this top section.The first sections 394 extends upward from a summit of left side arcuate part 386, and the second sections 392 extends upward from a summit of right side arcuate part 388.Preferably, this top section is to be formed by a kind of self-supporting and semirigid material.In some configurations, this top section does not comprise any backing (comprising soft padded backing layer).

Near upper arm 284 and underarm 286 each comfortable each arm ends, comprise a line of rabbet joint 292,290.Each line of rabbet joint is configured for the band 260 receiving from face shield assembly 102, as shown in Figure 2.In addition, the part being covered by band 260 398 of semi-rigid headgear 380 is thinner than corresponding arm 284, arm 286, to contain the thickness of band 260.For example, as shown in Figure 30 and Figure 31, semi-rigid headgear part 398 is thinner than arm 286.The size of part 398 is determined to be and makes when band 260 being inserted in the line of rabbet joint 290 and while straining, and its thickness will not exceed arm 286.By keeping the thickness of band 260 and part 398 to be less than the thickness of arm 286, when wearing, band 260 can not stimulate user.

In addition, upper arm 284 is configured to from a position of user ear top to downward-extension, makes like this when wearing adjustable top band 260 extend to apart from the eyes of user and is not less than about 10mm place.Underarm 286 is configured to the cervical region from user when head tilts up and down and departs from, and the terminating point of underarm 286 is positioned at the ear below of this user generally, and the bottom band that makes to be like this attached on underarm 286 angularly rises to face shield assembly 120 from terminating point 290.In this configuration, as shown in Figure 52 and Figure 53, these bottom bands and these top bands have formed a triangle, and these bottom bands on this face shield and the space between these top bands are less than these bottom bands on this headgear and the space between these top bands, thereby have stablized face shield assembly 120 in case it moves up and down.

Referring again to Figure 17, elbow 222 is connected on a conduit 300 by a rotary components that can disconnect 302.As shown in the cross sectional view of Figure 20, elbow 222 comprises a mast 304, and this mast comprises an inwall 306 at base portion place.Inwall 306 comprises a depression 308.

A sleeve 310 comprises the flange 312 being received in depression 308.Can use any suitable technology that sleeve 310 is interior in position at elbow 222.Sleeve 310 comprises a columniform outer wall 314 substantially.Flange 312 comprises that one stretches out and is connected to a section on a lever 316.Preferably, flange 312 and lever 316 are that integral type forms.With reference to Figure 21, lever 316 comprises a bottom snap close 320 extending internally and can carry out pivotable around this section that lever 316 is connected to flange 312.Therefore, on a top 322 of lever 316, inwardly press and can cause snap close 320 to deviate from the columniform outer wall 314 substantially of this sleeve 310 and move.

(swivel) 330 that turns comprises a columniform inwall 332 substantially.Inwall 332 slides on the outer wall 314 of sleeve 310, and make turn 330 and sleeve 310 between form a kind of being slidably matched.A top 334 comprises a shoulder 336.The snap close 320 of lever 316 can be by engaging with shoulder 336 and turning in 330 axial locations that are fixed on sleeve 310.When the top 322 of lever 316 is pressed, snap close 320 moves away shoulder 336, and this allows to turn and 330 from sleeve 310, removes.

A flap 350 can be arranged between mast 304 and sleeve 310.In shown configuration, flap 350 extends to a flow channel 352 from the base portion 354 being sandwiched between mast 304 and sleeve 310.Flap 350 can make progress pivotable (as shown in Figure 20, seeing arrow P) and leave sleeve 310 around X-axis line (referring to Figure 21), makes like this can continue unhinderedly to arrive generally user by interface 100 from the stream of a malleation generator.The downward pivotable of flap 350 and contacting with sleeve 310, to stop providing this flow channel 352 of situation lower seal of forced air stream in this positive pressure source.In some configurations, flap 350 is contact sleeve 310 by halves.In some configurations, when when transferring position (down position), this passage 352 of flap 350 blow-by.

With reference to Figure 21, through the position of elbow 222 above flap 350, define a port 360.Port 360 is preferably along near part location axis X of being positioned at of elbow 222.In some configurations, port 360 is oriented to substantially be shielded by flap 350 and the air flow of isolating suction.In other words, when air makes flap 350 pivotables leave sleeve 310, flap 350 is moved at least in part or fully covers a position of port 360.

In some configurations, port 360 extends through a wall of inwall 362 elbow 222, that comprise a flat.When this flap moves up while leaving the flange 312 of sleeve 310, the inwall 362 of this flat contributes to flap 350 to seal generally this port 360.

In some configurations, lever 316 overlays on and in the major part of port 360, makes when observing port 360 covered generally.Yet as shown in Figure 20, gap 364 is preferably around at least a portion of lever 316 and make when flap 350 does not overlay on port 360, air flow can pass this port 360 relatively freely.In addition, in some configurations, port 360 and lever 316 are positioned in the side that the opening 370 with in being limited at pommel 220 of elbow 222 is identical, and when connectivity port assembly 104 is assembled on face shield assembly 102, this opening is positioned in face shield assembly 102.Advantageously, this location makes on elbow 222 one of port 360 in the position of user.In use, such position has further covered port 360 makes it not in sight, and this has produced aesthetically the more configuration of pleasant.In addition,, owing to being very rare through the mobile of port 360, therefore port 360 is arranged to will can not cause any obvious discomfort to this user towards user.

Although not shown, elbow 222 can also comprise one or more bias current passages.Preferably these bias current passages are positioned in orientation forward, so that this user is not directly impacted in any bias current.

The another kind of configuration of having shown elbow assembly 302 in Figure 48 to Figure 51.As show in Figure 49, elbow assembly 302 comprises that an elbow 222, sleeve 310 and/or one turn 330.In some configurations, elbow assembly 302 only includes elbow 222 and sleeve, and omitted, turns 330.This is turned and can for good and all or be removedly attached on sleeve 310 and elbow 222; In some configurations, turning 330 is to form with the end integral type of delivery conduit.Flap 350 is positioned on sleeve 310 and makes this flap block at least in part the flow channel 352 of this sleeve.Elbow assembly 302 is similar with the effect of the elbow assembly 302 of Figure 17 to Figure 21; Yet the elbow assembly 302 of Figure 48 to Figure 51 provides extra benefit, that is, when flap 350 drops to its closed position, guiding gas leaves this patient (as shown in Figure 50 and Figure 51).

With reference to Figure 49, sleeve 310 preferably includes two or more incision tract or caves in 356.These depressions 356 can have any suitable shape, and in shown configuration, these depressions 356 comprise a kind of semicircle configuration extending up in sleeve 310.Sleeve 310 also comprises at least one protrusion 357 and two or more protrusions 357 preferably.Preferably, each protuberance 357 extends around the arc of approximately 70 degree.More preferably, each protuberance 357 be positioned at generally two depression 356 in the middle of and each protuberance 357 outer surfaces around sleeve 310 extend approximately 70 degree.

330 the configuration of turning is preferably columniform substantially.As shown in Figure 49, turn and 330 there is a ridge extending internally 358.Ridge 358 is preferably around whole inner surface.In some configurations, ridge 358 can be interrupted.Yet preferably, ridge 358 does not have even as big as holding the interruption of whole protrusion 357, make like this ridge 358 and 357 of protuberances can assist to keep turning and 330 be installed on sleeve 310.When turning 330 while being assembled on sleeve 310, the 216 permission protrusions 220 that cave in to intrinsic deflection, make protrusion 357 can slip over ridge 358 and then outwards buckle go back and protrusion 357 be fixed under ridge 358.

Elbow 222 comprises a plurality of openings 420 at its place, side, and these openings are communicated with in fluid with an air venting channels 422.As shown in Figure 50 and Figure 51, air venting channels 422 is formed by the inwall 362 of this elbow and the interval between outer wall 424.

As shown in Figure 50 and Figure 51, when flap 350 drops to its closed position, the air that user is breathed out enters in the opening 370 of elbow 222.Expiration is flowed through the port 360 in the inwall 362 of elbow, is also passed venting channels 422 until it leaves elbow 222 via opening 420.

The configuration of Figure 48 to Figure 51 provides a total length reducing and has improved product aesthetic feeling by ugly hole that elimination is positioned at the place, front portion of elbow 222.In addition, the configuration of Figure 48 to Figure 51 is by preventing that air is drawn towards user and has improved patient's comfort level.On the contrary, a plurality of openings 420 are drawn air and leave patient from having these sides of elbow 222.

With reference to Figure 54, for example but do not limit, can use head that a flexible head grip assembly 500 is fixed to a user by a face shield assembly for respiratory therapy.The flexible head grip assembly 500 of showing can be used together with any suitable face shield assembly, includes but not limited to any one in these these disclosed face shield configurations.

The flexible head grip assembly 500 of showing comprises a band part 502 behind.At least a portion of band part 502 and an abaculus 504 connect behind.In shown configuration, behind band part 502 is configured for crosses over a segment distance around the back side of the head of this user and is configured for the every side extension towards the head of this user.

Continuation is with reference to Figure 54, and a pair of upper arm 506 and a pair of intermediate arm 510 be top edge 512 horizontal expansion generally of band part 502 from behind.A pair of underarm 514 is lower limb 516 horizontal expansion generally of band part 502 from behind.In some configurations, this to underarm 514 downwards and deviate from this behind band part 502 and extend, a lower limb that makes underarm 514 will be located lower than the feather edge of behind band part 502.In some configurations, this to intermediate arm upwards and deviate from this behind band part 502 and extend has intermediate arm 510 to be positioned higher than a top edge of this behind band top edge partly.

In shown configuration, underarm 514 and intermediate arm 510 end at end 520.End 520 can comprise standing part 522, and these standing parts can be formed by hook or the coil component of the fastening arrangement for hook-and-loop pattern.Preferably, and as will be below described in more detail, these standing parts 522 at least comprise the hook portion that can engage with the material of another part of headgear assembly 500.Each upper arm 506 also can end at the region that comprises a standing part 524.

In the time of on the head that is positioned at a user, behind band part 502 is positioned in the outer knuckle of pillow or thereunder and be positioned at above the nape of this user.Can in any suitable way these top bands 506 be linked together.In some configurations, fixture is fixed together these top bands 506 and this standing part 524 that is folded in half and is fixed on another part of top band 506.Therefore, top band 506 can extend across the top of the head of user generally, to limit the moving down of remainder of headgear assembly 500.

Intermediate arm 510 and underarm 514 can be connected on a fixture (not shown) or on another part of this face shield assembly, make intermediate arm 510 and underarm 514 by headgear assembly 500 directly also or indirectly (for example, with a fixture, such as but not limited in Figure 40, show that) be fixed on this face shield.Doubling can and be carried out with a folding line through ring or other structures on this face shield assembly in the end 520 of intermediate arm 510 and underarm 514.Can fix in any suitable way overlapping part.For example but do not limit, can for example, with the fastening arrangement of hook-and-loop formula (a, Velcro securing member) fix these laps.

With reference to Figure 55, at least one in the end of upper arm 506, intermediate arm 510 and underarm 514 can comprise the end 520 of expansion.Preferably, the end 520 of expansion is at least formed on the intermediate arm 510 and underarm 514 of flexible headgear 500.In some configurations, the end 520 of expansion can occur on the one or more arms that are connected on face shield assembly.The end 520 expanding can form with the major part integral type of arm 510, arm 514.

As mentioned above, arm 526 can form with end 520 integral types that expand.The end 520 of the expansion of showing has a width d, and arm 526 has a width e.The width e of arm 526 can be between about 12mm and about 20mm, between about 14mm and about 18mm or be preferably about 16mm.The width d of the end 520 expanding can be between about 18mm and about 26mm, between about 20mm and about 24mm or be preferably about 22mm.In certain embodiments, the Breadth Maximum d of the end 520 of expansion and the difference between arm width e are between about 3mm and about 10mm or between about 5mm and about 8mm.In some configurations, Breadth Maximum d and the difference between arm width e of the end 520 of expansion are about 6mm.Because the width d of the end 520 expanding is greater than the width e of arm 526, the edge of the end 520 therefore expanding can more easily be located so that this part for end 520 is fixed on this arm can more easily be located, so that this arm of recompounding 526(for example, to tighten up, unclamp, remove or otherwise reorientate this flexibility headgear 500).

In addition,, when the width d of the end 520 expanding is greater than the width e of arm 526, in the end 520 expanding and a position between arm 526, can form a cervical region 536.In the time of on the head that is fixed to this user, the probability skidding off in the attachment part of the end 520 that cervical region 536 can reduce this expansion from this face shield assembly.For example, an opening in the attachment part on this face shield assembly can be wide to about 18mm for about 16mm, and the end 520 expanding can be about 16mm for about 22mm and arm 526.Therefore the probability that, the end 520 of expansion pulls through this opening is unintentionally greatly reduced.

The geometry of cervical region 536 can further reduce the end 520 of this expansion and pass unintentionally the probability that this opening pulls.Can use any suitable changeover portion.As Figure 56 shows, when wishing, cervical region 536 can be crooked to promote this arm to remove from this face shield assembly.This cervical region can extend with the angle between approximately 0 degree and approximately 90 degree with respect to this arm.Preferably, cervical region 536 extends with the angle between approximately 20 degree and approximately 60 degree.In some configurations, cervical region 536 can be changeover portion more sharply of a changeover portion more sharply or.More sharply, this arm is more impossible separated with this face shield assembly unintentionally for this changeover portion.

Cervical region 536 has formed the part of geometry for the end 520 of this expansion.In some configurations, the end 520 of expansion can be roughly avette.In some configurations, the end 520 of expansion can be configured to be similar to various shapes, comprises for example parallelogram, ellipse, circle, triangle or any other suitable shape.

Continuation is with reference to Figure 55, and the end 520 of each expansion can comprise the abaculus 522 of an embedding with fastener or analog.Abaculus 522 can be positioned on the end 520 of expansion, makes when arm has been folded in half on himself, and the end 520 of expansion can be fixed on another part of corresponding arm.The abaculus 522 embedding (for example, can comprise a kind of fabric hook (hook-fabric)

).Therefore, the hook material of the end 520 of expansion and specifically abaculus 522 can be secured on another part of respective arms, so that headgear assembly 500 is fixed on face shield assembly.

Abaculus 522 can be attached on the end of these arms in any suitable way.In some configurations, abaculus 522 is to be attached on the end 520 of expansion by ultra-sonic welded.For example, abaculus 522 can be positioned in a desirable position of arm, and then ultra-sonic welded technique can be melted in this bi-material together effectively.With reference to Figure 56, when using ultrasonic bond to fetch on the end 520 that the fabric hook abaculus 522 of expansion is attached to expansion, around the periphery of the fabric hook abaculus 522 expanding, formed a welding edge 530 with width α.Due to the ultra-sonic welded operation in shown configuration, the width α of welding edge 530 is about 3mm.Because this ultra-sonic welded operation makes the hook fusing of this fabric hook or is otherwise out of shape, the effect that the region that comprises welding edge 530 of this fabric hook abaculus 522 does not engage with the material that receives hook conventionally.Therefore, the long-pending surface area that equals this welding edge surface area that has been reduced of the functional surface of fabric hook abaculus 522.

Welding edge 530 can be defined by a soft edge 532, and this soft edge comprises that these of end 520 of expansion receive the breathable composite materials of hooks and have width b.Preferably, below the surface of welding edge 530 recessed soft edge 532.The projection of the width e of arm 526 can extend through welding edge 530 and make soft edge 532 that the projected segment being oriented to from the width e of arm 526 is outside a little.

The width b of this soft edge can be for from about 0.5mm to about 4mm, from about 1mm to about 3mm or be preferably about 2mm.An effective hook portion 534 can and have a width c in abutting connection with this welding edge 530.Effectively the width c of hook portion can be narrower than the width e of arm 526 a little.By increasing width c, the functional surface that can increase fabric hook material is long-pending, has therefore improved shearing force resistance and durability.By making width c be less than the width e of arm 526, arm 526 has reduced the probability of the skin of effective hook portion 534 these user of contact.Effectively the width c of fabric hook portion 534 can be from about 8mm to 16mm, from about 10mm to about 14mm, be preferably about 12mm.The width e of the end expanding makes it possible to increase the long-pending width c of functional surface.In other words, the end of arm is extended and make to increase the width of this effective hook portion 534, and this can provide the surperficial more firm attached of the end of this expansion and this arm.

Flexible head grip assembly 500 can be formed by any suitable material.In some configurations, flexible head grip assembly 500 can at least be coated with a kind of breathable composite materials or its at least a portion that receives fastener and be formed by this material.In some configurations, flexible head grip assembly 500 can be at least partly by nylon/Lycra material forms.In certain embodiments, when a wide material sample of 150mm length * 20mm stands the axial load of 10N, this sample elongates about 207mm, and the axial load of 10N causes approximately 38% percentage elongation.Therefore, this material is preferably quite resilient.In certain embodiments, headgear assembly 500 can comprise the edge of one or more spherings.Can form in any suitable way the edge of these spherings.In some configurations, the edge of these spherings be by the edge to headgear assembly 500 apply heat and pressure form.In some configurations, the edge of these spherings is to be similar to United States Patent (USP) the 3rd, and the mode of the technology described in 295, No. 529 forms, and this patent is combined in this with its full content by reference.

As described above, the behind band part 502 of the flexible head grip assembly 500 of showing preferably includes at least one relatively inelastic abaculus 504.This abaculus can be formed by a kind of material of relatively low stretching, such as but not limited to polyester

material.In certain embodiments, when a wide material sample of 150mm length * 20mm stands the axial load of 10N, this sample elongates about 160mm, and the axial load of 10N causes approximately 7% percentage elongation.Therefore, compare with the more resilient material of this flexible portion, this material is preferably quite nonelastic or not extensile.

Because abaculus 504 is to be formed by a kind of material lower than peripheral part elasticity of headgear assembly 500, so the stretching at least a portion of abaculus 504 opposing headgear assemblies 500.By resisting the elongation of at least a portion of this resilient headgear assembly, this abaculus contributes to make headgear 500 maintain desirable shape and contributes to headgear 500 is maintained to a desirable position for the back side of user head.

Test shows, in the situation that not using abaculus 504, when these lower bundle bands are applied to cumulative load, the elongation in the back of headgear assembly 500 may cause this headgear assembly to extend and towards the cervical region of user, move downwards.Figure 57 A and Figure 57 B have shown the impact that the underarm 514 of flexible headgear 540 is applied to cumulative power, and this flexible head cover has the behind band part 544 consisting of a kind of elastomeric material completely.The configuration of showing in Figure 57 A and 57B does not have the feature of abaculus 504.

As mentioned above, in the time of above the nape in knuckle or thereunder and at this user outside behind band part 544 is positioned at pillow, this behind band is partly positioned in a desirable position.In Figure 57 A, shown the behind band part 544 in a preferred position.In order to assist mobile visualization, on test model 542, show a plurality of position marks 546.As shown in Figure 57 B, when cumulative load is applied on underarm 514, the elastic property of behind band part 544 allows its to extend and distortion, and this allows behind band part 544 to move down along the cervical region of this user.With reference to these position marks 524, this movement has been described.Along with downward movement, from the larger power of posterior cord band portion 544, be applied in cervical region rather than head, this is more undesirable.Due to when for respiratory therapy, flexible headgear 540 may be worn the time of the several minutes time to a few hours or a few hours to a couple of days, so discomfort may be caused to this user in the location of the reduction of band part 544 behind.

In order to reduce the elongation degree of behind band part 502 when cumulative power is applied in underarm 514, the less abaculus 504 of elasticity can be attached on posterior cord band portion 502.In some configurations, abaculus 504 can comprise not extensile insert 560 substantially.Insert 560 can be attached in behind band part 502, for example, be to be sewed up (over-lock stitching), pass through ultra-sonic welded, passed through to use glue or other binding agents or pass through any other known method of those skilled in the art by lock seaming formula.When insert 560 is attached in behind band part 502, it can provide larger anti-tensile, and this allows to underarm 514, to apply larger power when attached and the flexible headgear 500 of use.Therefore, insert 560 can advantageously reduce the distortion of behind band part 502 and assist this behind belt portions to divide and remain on respect to the head of user and a desirable position for cervical region.

As shown in Figure 58 A to Figure 58 D, not extensile insert 560,562,564,566 can be configured to various shape, includes but not limited to those shown in Figure 58 A to Figure 58 D.Preferably, not extensile insert 560,562,564,566 in abutting connection with or cover at least this band part 502 behind.In some configurations, not extensile insert 562,564 in abutting connection with or cover at least a portion of these underarms 514.In some configurations, not extensile insert 562,564 in abutting connection with or cover at least a portion of the bonding pad between these underarms 514 and behind band part 502.In some configurations, not extensile insert 564 in abutting connection with or cover at least a portion of these intermediate arms 510.In some configurations, not extensile insert 564 in abutting connection with or cover at least a portion of the bonding pad between these intermediate arms 510 and behind band part 502.In some configurations, the height of not extensile insert 560 be band part 502 behind height h at least about half.In some configurations, the height of not extensile insert 560 is the height h of band part 502 approximately over half behind preferably.By a part for band part 502 is behind formed by more resilient material, band part 502 can be limited but surpassed in the degree that the behind band that less material forms by elasticity completely partly may have and stretch and be out of shape behind.

Not extensile insert 560 can be configured to have any suitable surface area.Not extensile insert 560 can be configured to extend along the different length of the lower limb 516 of behind band part 502.In some configurations, not extensile insert 560 is along the extension over half of the lower limb 516 of behind band part 502.Preferably, not extensile insert 560 extends along the whole lower limb 516 substantially of behind band part 502.Other configurations are possible.

Referring now to Figure 59, shown an assembly that comprises headgear 600, this headgear has two or more bands that can be connected with a wing formula bracelet 602.The same with other headgears described herein, headgear 600 can be used together with any suitable face shield assembly, includes but not limited to any one in these these disclosed face shield configurations.In addition, the configuration of showing comprises a plurality of bands that connected by a wing formula bracelet 602, and this configuration can for (such as but not limited to) disclosed any headgear herein.

In the configuration of showing at Figure 59, headgear assembly 600 comprises at least one pair of upper arm 606.Each upper arm 606 can end at end 608.In some configurations, this comprises a standing part at least one in upper arm 606, as at other local described any standing parts.In shown configuration, each upper arm 606 comprises a standing part.Preferably, these standing parts are positioned on end 608 at least in part.In some configurations, these standing parts can be formed by hook or the coil component of the fastening arrangement for hook-and-loop pattern.Preferably, these standing parts at least comprise the hook portion that can engage with the material of another part of headgear assembly 600.

With reference to Figure 59, for example but do not limit, can connect these upper arm 606 by wing formula bracelet 602.As shown in Figure 61, wing formula bracelet 602 can comprise a body 610, and this body defines at least one line of rabbet joint 612, at least two lines of rabbet joint 612 preferably.This at least one line of rabbet joint 612 holds the end 608 of these bands 606, makes the end 608 of these bands 606 and then to turn down and to use standing part as described above in position through this at least one line of rabbet joint 612.

The body 610 of the bracelet 602 of showing comprises day shaped sliding connector part 614 and a pair of fin 616.Therefore, this at least one line of rabbet joint 612 can by day shaped sliding connector part 614 limit.Yet, in some configurations, this at least one line of rabbet joint 612 can be by forming with lower one or more (comprise a plurality of with in lower component one or more): the bracelet of a circle, a Q-RING, a D type ring, an oval loop, an on-slip, ladder lock or analog.

Fin 616 advantageously provides support band 606, makes like this (as shown in Figure 59) to comprise that the headgear assembly 600 of band 606 can roughly maintain 3D shape.In some configurations, the bracelet without fin is by this headgear assembly of permission and band 606 is folding and fall around this bracelet more specifically, and this may cause this headgear assembly substantially not maintain 3D shape.Therefore, have been found that fin 616 has strengthened the availability of headgear assembly 600.

With reference to Figure 62, the outside extension 618 of side direction that the wing is 616 extends beyond a lower surface 620 of this connector part 614 downwards.By making the portion that extends laterally 618 extend to lower surface below 620, with respect to a smooth bracelet, bracelet 602 can meet and/or follow head crown of user better.Yet in some configurations, the outside extension 618 of side direction can not extend downwardly into lower surface below 620, and/or the bottom of this bracelet (comprising these fins) can be general planar or sphering.

Bracelet 602 can be formed by any suitable material.In some configurations, bracelet 602 can comprise two or more different materials, make like this connector part 614 to be formed by the larger material of a kind of rigidity, and at least these fins 616 can be formed by a kind of softer material.Softer fin 616 can improve comfort level, and the larger adapter 614 of rigidity makes this bracelet 602 can be carried in headgear assembly 602 expection by the load of experience.

In some configurations, these two or more different materials can be wrapped by molded or common molded and form bracelet 602.In some configurations, these two or more different materials can mechanically be connected (for example, be clasped, keyed jointing etc.) maybe can be by adhering to, bonding etc. connection.In some configurations, for example but do not limit, at least these fins 616 can be formed by a kind of thermoplastic elastomer (TPE) or a kind of impact-resistant modified polyethylene.In some configurations, for example but do not limit, connector part 614 can be formed by nylon etc.In some configurations, this connector part and these fins can be formed by the multiple material with same matrix material (for example, having the material of suitable chemical relationship to allow these materials to connect).

Still, with reference to Figure 62, these fins 616 preferably extend laterally portion 616 from the region near connector part 614 towards these and are tapered generally on thickness.Although can use any suitable tapered profile, the reducing to have promoted the deflection of fin 616 of thickness and the anatomy that can meet better user.In other words, fin 616 has produced weak flexural strength at the thickness reducing from abutting connection with the outside position of this part side direction of this connector part 614, and this contributes to meet the anatomy of user.

Referring again to Figure 61, fin 616 has inwardly tapered a plurality of sidewalls 622.In shown configuration, inside tapered sidewall 622 is attached on the end wall 624 with sphering turning 626.User comfort level has been improved at sphering turning 626, and tapered sidewall 622 has reduced the width of fin 616.At least the width reducing of the end of fin 616 has promoted fin 616 to catch below Nei, end, the fold domain of band 606 608, and this is shown best in Figure 59 and Figure 60.In some configurations, folding end 608 and/or the adjacent part of band 606 define a depression, and this depression receives the tapered end of these fins 616.In some configurations, band 606 can widened in a region as discussed above.In shown configuration, the connector part 614 of bracelet 602 is wider than at least a portion of band 606, make like this band 606 can extend through the opening 612 defined in connector part 614, and fin 616 is tapered and make band 606 can overlay on fin 616 and/or encase it.

In some configurations, fin 616 extends and leaves 604 1 length L 2 of this connector part, and this length is greater than the twice of thickness L1 of this wall of the connector part 604 that defines the line of rabbet joint 612.Other configurations are also possible.As discussed above, the development length L2 of fin 616 has reduced the upset of band 606 when being connected with wing formula bracelet 602.Fin 616 can have a length L 2 of the length of the connector part that is less than these ends 608, makes like this portion that extends laterally 618 of fin 616 to be encased by the connector part of these ends 608.

Although with regard to certain embodiment, invention has been described, clearly other embodiment are also within the scope of the invention for those of ordinary skill in the art institute.Therefore, without departing from the spirit and scope of the present invention, can make a variety of changes and revise.For example, can reorientate as desired all parts.In addition, be not all feature, aspect and advantages be all put into practice essential to the invention.Therefore, scope of the present invention is intended to only by following claims, be limited.

Claims (29)

1. a face shield assembly, comprise a mask seal part, this mask seal part comprises a top and a bottom, this top is pivotable with respect to this bottom, this top comprises the region with the stiffness reducing being positioned between first border and a second boundary, this first border is to be limited by the large degree without a break of stiffness having than this in region of the stiffness reducing, this the second boundary is to be limited by the large degree without a break of stiffness having than this in region of the stiffness reducing, wherein, when this first border is when this second boundary moves, this region with the stiffness reducing is curling and limit a material rolling section on a single direction, this material rolling section is along with this first border continues move and change in size towards this second boundary.

2. face shield assembly as claimed in claim 1, wherein, this region with the stiffness reducing has promoted this top of sealing member with respect to the movement of this bottom of sealing member.

3. face shield assembly as claimed in claim 2, wherein, this top comprises a bridge of the nose part of this face shield, and this first border has promoted this nose bridge of this face shield to divide the movement with respect to this bottom of this face shield towards the movement of this second boundary.

4. face shield assembly as claimed in claim 1, wherein, this second boundary is positioned between Yu Gai bottom, this top.

5. face shield assembly as claimed in claim 4, wherein, this face shield further comprises a mask seal part fixture of the rigidity for this mask seal part with increase, this second boundary is along the location, an end of this mask seal part fixture.

6. face shield assembly as claimed in claim 5, wherein this material rolling section overlays at least a portion of this mask seal part fixture.

7. face shield assembly as claimed in claim 1, wherein, this first border limits along a strengthening part.

8. face shield assembly as claimed in claim 7, wherein, this strengthening part comprises a plastics band.

9. face shield assembly as claimed in claim 1, wherein, this region with the stiffness reducing is defined as to have the thickness reducing with respect to this first border.

10. face shield assembly as claimed in claim 1, wherein, this second boundary is to be limited by a turning with minor radius.

11. face shield assemblies as claimed in claim 1, wherein, this rolling section has extended across at least a portion of this mask seal part.

12. face shield assemblies as claimed in claim 1, wherein, when this first border is when this second boundary moves completely, this rolling section overlays at least a portion of this mask seal part fixture.

13. 1 kinds of face shield assemblies, comprise a mask seal part, this mask seal part has a nasal region and a mouth region, He Gai mouth region, this nasal region is that integral type forms, this nasal region is with respect to this mouth region movably, makes so roughly to remain constant by this nasal region applied force in a plurality of positions and is increased by this mouth region applied force.

14. 1 kinds of face shield assemblies, comprise the mask seal part being connected on a stature grip assembly, this mask seal part is configured to nasal bridge region and the mouth region around a user, and this mask seal part comprises for applying the power of a constant and apply the device of the aptychus of a cumulative power simultaneously to a mouth region to this nasal bridge region when this headgear assembly being tightened.

15. 1 kinds of face shield assemblies, this face shield assembly comprises a sealing member, the seal comprises the flange engaging with the face of a user, the seal is connected on a face shield basis removedly, this face shield basis comprises first opening and second opening, this first opening and this second opening receive first fixture and second fixture from a relevant header grip assembly, this face shield basis further comprises the path being positioned at generally between this first opening and this second opening, this path is adapted to for receiving an air tube adapter.

16. face shield assemblies as claimed in claim 15, further comprise a mask seal part fixture, and this mask seal part fixture is connected on this mask seal part and is connected to removedly on this face shield basis.

17. face shield assemblies as claimed in claim 16, wherein, this face shield basis overlays in the substantive part of this mask seal part fixture.

18. face shield assemblies as claimed in claim 17, wherein, this face shield basis comprises a neighboring and at least one depression, and this at least one depression is that this neighboring along this face shield basis limits in the position overlaying on this mask seal part fixture.

19. 1 kinds of face shield assemblies, comprising: a mask seal part, and this mask seal part comprises a proximal rim, and this proximal rim is adapted to for contacting the face of a user, and this mask seal part comprises that one towards the surface of far-end; A face shield basis that comprises the covering surfaces that extend He Conggai neighboring, a neighboring, this face shield basis covering surfaces overlays on being somebody's turn to do in surperficial at least a portion of far-end of this mask seal part, and make this face shield basis covering surfaces on a distal direction with this mask seal part should be towards far-end spaced, the surface towards far-end of this face shield basis covering surfaces and this mask seal part provides a kind of buffer action that dampness rain is washed that reduces to this face shield assembly thus.

20. 1 kinds of headgear assemblies, are configured for a face shield assembly are fixed on the head of a user, and this headgear assembly comprises:

A belt assembly, this belt assembly comprises postbrachium, upper arm and a underarm and at least one bizet arm, wherein, this upper arm and underarm define a plurality of arc areas, and the shape of these arc areas is determined to be at least in part around the ear of a user; And

A soft edging, this softness edging is attached at least a portion of periphery of this belt assembly.

21. headgear assemblies as claimed in claim 20, wherein, this belt assembly comprises that a semi-rigid band and this softness edging are docked on this semi-rigid band and is not overlapping with this semi-rigid band.

22. headgear assemblies as claimed in claim 20, wherein, this belt assembly comprises a semi-rigid band, and this semi-rigid band comprises that first thickness and this softness edging comprise second thickness, and this first thickness and this second thickness are roughly the same.

23. headgear assemblies as claimed in claim 20, wherein, this belt assembly comprises a semi-rigid band, this semi-rigid band comprise a thickness and this softness edging at least one region than this thin thickness.

24. headgear assemblies as claimed in claim 20, wherein, this belt assembly comprises a semi-rigid band, this semi-rigid band comprise a thickness and this softness edging thicker than this thickness at least one region.

25. headgear assemblies as claimed in claim 20, wherein, this belt assembly comprises a semi-rigid band, this softness edging has formed a bulbous end portion of this semi-rigid band.

26. 1 kinds of elbow assemblies, are configured for a face shield assembly are connected on an air conduit, and this elbow assembly comprises:

An elbow and a sleeve, this elbow comprises inner and outer wall and between this inwall and outer wall, defines an Air Flow raceway groove, and this inwall comprises a port in a side of this elbow, and this sleeve and this elbow are connected;

This sleeve comprises a flap, wherein, when this flap is during in a primary importance, this flap blocks at least in part this port and allows passes to a user from the gas of this air conduit via this elbow, and when this flap is during in a second position, this flap blocks this air conduit at least in part, thereby allow gas from this user, to flow to a position of this elbow assembly outside via this port and this Air Flow raceway groove, wherein this Air Flow channels direct air leaves this side of this elbow.

27. elbow assemblies as claimed in claim 26, wherein, this Air Flow raceway groove comprises two Air Flow raceway grooves.

28. elbow assemblies as claimed in claim 26, wherein, this sleeve further comprises the protrusion extending around an outer surface of this sleeve and a depression that is adjacent to this protrusion.

29. elbow assemblies as claimed in claim 28, wherein, this protrusion and this depression are adapted to for receiving a rotary part, and this rotary part is combined with a ridge for engaging with this protrusion.

Images